They do not last forever. And they’re not sufficient
26, protons and nuetrons will always be the same
A: Bent
Hydrogen needs 2 electrons and Beryllium needs 8
Compound Formula CuF2
Appearance White crystalline powder
Melting Point 836° C (1,537° F)
Boiling Point 1,676° C (3,049° F)
Density 4.23 g/cm3
Hope I helped
To filter out impurities and so you are able to shape the liquid steel so that when it solidifies you have whatever shape you need, like a steel blade or train rail.
